Hebei Metals Industrial Limited supplies ASTM A182 low alloy steel, especially Cr-Mo alloy steel forgings for high-temperature piping industry. The ASTM A182 low alloy steel forgings cover pipe flanges, forged fittings, valves and parts which are widely used in boilers, pressure vessels, steam lines and other high-temperature applications. The ferritic alloy steel(Cr-Mo alloy steel) forgings are also endorsed by ASTM A336 which is the standard specification for alloy steel forgings for pressure and high-temperature parts.

1. Chemical Composition Requirements

Chemical Composition of ASTM A182 Low Alloy Steels, %
ID. Symbol*	C	Mn	P	S	Si	Cr	Mo	Others
F1	0.28	0.60-0.90	0.045	0.045	0.15-0.35	-	0.44-0.65	-
F2	0.05-0.21	0.60-0.80	0.040	0.040	0.10-0.60	0.50-0.81	0.44-0.65	-
F5	0.15	0.30-0.60	0.030	0.030	0.50	4.0-6.0	0.44-0.65	*A
F5A	0.25	0.60	0.040	0.030	0.50	4.0-6.0	0.44-0.65	*B
F9	0.15	0.30-0.60	0.030	0.030	0.50-1.00	8.0-10.0	0.90-1.10	-
F10	0.10-0.12	0.50-0.80	0.040	0.030	1.00-1.40	7.0-9.0	-	*C
F91	0.08-0.12	0.30-0.60	0.020	0.010	0.20-0.50	8.0-9.5	0.85-1.05	*D
F92	0.07-0.13	0.30-0.60	0.020	0.010	0.50	8.5-9.5	0.30-0.60	*E
F122	0.07-0.14	0.70	0.020	0.010	0.50	10.00-11.50	0.25-0.60	*F
F911	0.09-0.13	0.30-0.60	0.020	0.010	0.10-0.50	8.5-9.5	0.90-1.10	*G
F11 CLASS1	0.05-0.15	0.30-0.60	0.030	0.030	0.50-1.00	1.00-1.50	0.44-0.65	-
F11 CLASS2	0.10-0.20	0.30-0.80	0.040	0.040	0.50-1.00	1.00-1.50	0.44-0.65	-
F11 CLASS3	0.10-0.20	0.30-0.80	0.040	0.040	0.50-1.00	1.00-1.50	0.44-0.65	-
F12 CLASS1	0.05-0.15	0.30-0.60	0.045	0.045	0.50	0.80-1.25	0.44-0.65	-
F12 CLASS2	0.10-0.20	0.30-0.80	0.040	0.040	0.10-0.60	0.80-1.25	0.44-0.65	-
F21	0.05-0.15	0.30-0.60	0.040	0.040	0.50	2.7-3.3	0.80-1.06	-
F3V	0.05-0.10	0.30-0.60	0.020	0.020	0.10	2.8-3.2	0.90-1.10	*H
F3VCb	0.10-0.15	0.30-0.60	0.020	0.010	0.10	2.7-3.3	0.90-1.10	*I
F22 CLASS1	0.05-0.15	0.30-0.60	0.040	0.040	0.50	2.00-2.50	0.87-1.13	-
F22 CLASS3	0.05-0.15	0.30-0.60	0.040	0.040	0.50	2.00-2.50	0.87-1.13	-
F22V	0.11-0.15	0.30-0.60	0.015	0.010	0.10	2.00-2.50	0.90-1.10	*J
F23	0.04-0.10	0.10-0.60	0.030	0.010	0.50	1.90-2.60	0.05-0.30	*K
F24	0.05-0.10	0.30-0.70	0.020	0.010	0.15-0.45	2.20-2.60	0.90-1.10	*L
FR	0.20	0.40-1.06	0.045	0.050	-	-	-	*M
F36	0.10-0.17	0.80-1.20	0.030	0.025	0.25-0.50	0.30	0.25-0.50	*N

*”ID.S” refers to the identification symbol of the grades stipulated by ASTM A182.
*All values are maximum unless a range is provided or otherwise specified.
*A – Ni:≤0.50; *B – Ni:≤0.50; *C – Ni:19-22;
*D – Ni:≤0.40,Co:0.06-0.10%,N:0.03-0.07,Al:≤0.02,V:0.18-0.25,T≤0.01%,Zr≤0.01.
*E – Ni:≤0.40,Co:0.04-0.09;V:0.15-0.25,N:0.030-0.070,Al:≤0.02,W:1.50-2.00,B:0.001-0.006,Ti&Zr:≤0.01.
*F – Ni:≤0.50,Co:0.04-0.10,V:0.15-0.30,B:≤0.005,N:0.04-0.10,Al:≤0.02,Cu:0.30-1.70,W:1.5-2.5,Ti&Zr:≤0.01.
*G – Ni:≤0.40,Co:0.06-0.10,W:0.90-1.10,Al:≤0.02,N:0.04-0.09,V:0.18-0.25,B:0.0003-0.006,Ti&Zr:≤0.01.
*H – Ti:0.015-0.035,V:0.20-0.30,B:0.001-0.003.
*I – Ni:≤0.25,Co:0.015-0.070,Ti:≤0.015,V:0.20-0.30,Cu:≤0.25,Ca:0.0005-0.0150.
*J – Ni:≤0.25,Co:≤0.07,Ti≤0.030,Cu≤0.20,V:0.25-0.35,B:≤0.002,Ca:≤0.015.
*K – Ni:≤0.40,Co:0.02-0.08,Ti:0.005-0.060,V:0.20-0.30,B:0.001-0.006,N:≤0.015,Al:≤0.030,W:1.45-1.75.
*L – Ti:0.06-0.10,V:0.20-0.30,N:≤0.12,Al:≤0.020,B:0.0015-0.0070
*M – Ni:1.60-2.24,Cu:0.75-1.25. *N – Ni:1.00-1.30,Co:0.015-0.045,N:≤0.20,Al:≤0.050,Cu:0.50-0.80,V:≤0.02.
*All chemical content values listed above from *A to *N shall be furnished with the unit of %.

2. Mechanical Properties

Mechanical Properties of ASTM A182 Low Alloy Steels
Grade	Tensile Strength min. ksi[MPa]	Yield Strength min. ksi[MPa]	Elongation, min. %	Reduction of Area, min. %	Brinell Hardness Number, HBW
F1	70[485]	40[275]	20	30	143-192
F2	70[485]	40[275]	20	30	143-192
F5	70[485]	40[275]	20	35	143-217
F5a	90[620]	65[450]	22	50	187-248
F9	85[585]	55[380]	20	40	179-217
F10	80[550]	30[205]	30	50	-
F91	90[620]	60[415]	20	40	190-248
F92	90[620]	64[440]	20	45	≤269
F122	90[620]	58[400]	20	40	≤250
F911	90[620]	64[440]	18	40	187-248
F11 Class 1	60[415]	30[205]	20	45	121-174
F11 Class 2	70[485]	40[275]	20	30	143-207
F11 Class 3	75[515]	45[310]	20	30	156-207
F12 Class 1	60[415]	32[220]	20	45	121-174
F12 Class 2	70[485]	40[275]	20	30	143-207
F21	75[515]	45[310]	20	30	156-207
F3V & F3VCb	85-110[585-760]	60[415]	18	45	174-237
F22 Class 1	60[415]	30[205]	20	35	≤170
F22 Class 3	75[515]	45[310]	20	30	156-207
F22V	85-110[585-780]	60[415]	18	45	174-237
F23	74[510]	58[400]	20	40	≤220
F24	85[585]	60[415]	20	40	≤248
FR	63[435]	46[315]	25	38	≤197
F36 Class 1	90[620]	64[440]	15	-	≤252
F36 Class 2	95.5[660]	66.5[460]	15	-	≤252

3. Heat Treatment

Heat Treatment of ASTM A182 Alloy Steels
Grade	Heat Treatment Process
F1	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C].
F2	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C].
F5, F5a	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C].
F9	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C].
F10	Type: solution treat and quench; Minimum solutioning temperature:1900°F[1040°C]; Cooling media: liquid; Quenching cool below: 500°F[260°C]
F91	Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C].
F92	Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C].
F122	Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C].
F911	Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air or liquid cool; Temperature range of tempering: 1365-1435°F[740-780°C].
F11 Class 1, 2, 3	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C].
F12 Class 1, 2	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1150°F[620°C].
F21, F3V, F3VCb	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1750°F[955°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C].
F22, Class 1, 3	Type: anneal, or normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:furnace or air cool; Minimum tempering temperature:1250°F[675°C].
F22V	Type: normalize and temper, or quench and temper; Minimum austenitizing/solutioning temperature: 1650°F[900°F]; air or liquid cool; Minimum tempering temperature: 1250°F[675°C].
F23	Type: normalize and temper; Temperature range of austenitizing/solutioning:1900-1975°F[1040-1080°C]; air cool; Temperature range of tempering: 1350-1470°F[730-800°C].
F24	Type: normalize and temper; Temperature range of austenitizing/solutioning:1800-1975°F[980-1080°C]; air or liquid cool; Temperature range of tempering: 1350-1470°F[730-800°C].
FR	Type: anneal, or normalize, or normalize and temper; Minimum austenitizing/solutioning temperature: 1750°F[955°C]; air or furnace cool; Minimum tempering temperature: 1250°F[675°C].
F36 Class 1	Type: normalize and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:air cool; Minimum tempering temperature:1100°F[595°C].
F36 Class 2	Type: normalize and temper, or quench and temper; Minimum austenitizing/solutioning temperature:1650°F[900°C]; Cooling media:air cool or liquid; Minimum tempering temperature:1100°F[595°C].

*After hot working, the ASTM A182 low alloy steel forings shall be cooled to a temperature below 1000°F[538°C] prior to heat treatment.

4. Typical Steel Grades, UNS designation, and Steel Names

Steel Grades	UNS Designation	Steel Names
ASTM A182 F1	K12822	C-0.5Mo
ASTM A182 F2	K12122	0.5Cr-0.5Mo
ASTM A182 F5	K41545	5Cr-0.5Mo
ASTM A182 F5a	K42544	5Cr-0.5Mo
ASTM A182 F9	K90941	9Cr-1Mo
ASTM A182 F10	S33100	20Ni-8Cr
ASTM A182 F91	K90901	9Cr-1Mo-V
ASTM A182 F92	K92460	9Cr-0.5Mo-1.8W-V
ASTM A182 F11 CL1	K11597	1.25Cr–0.5Mo–Si
ASTM A182 F11 CL2	K11572	1.25Cr–0.25Mo–Si
ASTM A182 F11 CL3	K11572	1.25Cr–0.5Mo–Si
ASTM A182 F12 CL1	K11562	1Cr-0.5Mo
ASTM A182 F12 CL2	K11564	1Cr-0.5Mo
ASTM A182 F22 CL1	K21590	2.25Cr-1Mo
ASTM A182 F22 CL3	K21590	2.25Cr-1Mo
ASTM A182 F21	K31545	3Cr-1Mo
ASTM A182 F122	K91271	-
ASTM A182 F911	K91061	-
ASTM A182 F3V	K31830	-
ASTM A182 F3VCb	K31390	-
ASTM A182 F22V	K31835	2.25Cr-1Mo-V
ASTM A182 F23	K41650	-
ASTM A182 F24	K30736	2.25Cr-1Mo-0.25V-Ti-B
ASTM A182 FR	K22035	-
ASTM A182 F36	K21001	1.15Ni-0.65Cu-Mo-Co

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